ETHPoW is “the original Ethereum powered by PoW”. It was introduced in September 2022 after Ethereum’s Merge took place. ETHW was created by a group of developers who benefited from the ability to mine ETH tokens and were not satisfied with the network’s move to the Proof-of-Stake mechanism. The group was led by a Chinese miner, Chandler Guo, who discovered that a lot of miners depend financially on Ethereum usage of Proof-of-Work.
ETHPoW’s testnet was launched in August and the mainnet began functioning after the Merge was completed. As of right now, the ETHW mining process has been kept the same as ETH’s once was. The team behind ETHPoW has mentioned that they are not planning on altering it or making it ASIC-resistant.
On September 20th, 2022, EthereumPoW announced that a new bridge between EthereumPoW and Ethereum has been launched. The bridge was created to simplify the movement of USDT between the two networks.